11/9/2023 0 Comments Open source server monitorOnce you're collecting data and can make sense of it using some handy graphs, the next step on your journey should be setting up something to help alert you when conditions warrant attention. Get started with Red Hat OpenShift Service on AWS (ROSA). ![]() eBook: Modernize your IT with managed cloud services.Cacti focuses on network infrastructure more than servers and primarily uses SNMP to monitor things and gather data. Instead of just "is that thing there, and how quickly did it respond?" You can interrogate target machines for details like network traffic stats, load, or various resource utilization. It's similar to SmokePing in that it reaches into the network to gather health information, but it's designed to be more granular. Tools like Cacti might be a great option for increasing awareness of the networks connecting your infrastructure. For example, many monitoring tools are geared towards network or server infrastructure but can usually do some of both. Many monitoring tools have a particular focus, even when they can provide visibility into other aspects of infrastructure. Deciding to add other tools (or to trade SmokePing for something more robust) depends entirely on your infrastructure and organization. Network monitoringīeyond simple connectivity monitoring, things can feel a little daunting. There are even premade container images available that you can modify through their configuration files to suit your needs. Setting up SmokePing to get a basic view into the overall connectivity of a site or network can be a quick and easy win to bolster your monitoring capabilities. SmokePing also generates graphs of the latency it records for these targets and presents them in an intuitive web user interface (UI). This means you could build multiple tests that reach out to the same destination using different protocols to help paint a broad picture of the health of multiple services running on a single host. It can test using Internet Control Message Protocol (ICMP) pings, but also DNS, SSH, curl, and more. It routinely tests the ability to reach a configurable list of sites and reports the latency for each. SmokePing is an open source tool designed just for this type of testing. ![]() Being able to determine the overall health of your inbound and outbound connectivity can save a lot of troubleshooting time when dealing with an outage or fighting a confusing issue. Connectivity monitoringĪ good example of a baby step into monitoring is checking connectivity to the outside world through the network uplinks. Your infrastructure relies on a lot of the outside world functioning normally, so it can be truly insightful to know when those services are having problems. Your network may be fine, but monitoring the upstream projects to at least see when problems arise can be the difference between spending a few moments verifying that it's outside of your network or hours troubleshooting why nobody can get to a third-party website that was suddenly shut down. Or maybe developers are stuck in their tracks because they aren't able to pull down copies of specific libraries that they need. ![]() This could be something as simple as a firewall misconfiguration, which can be tested by running inbound connectivity checks from a cloud provider or a home internet connection. For example, your internal systems may all be working fine, but users complain that they can't reach an important internal website. Specifically, it can be useful to routinely check connectivity into or out of your infrastructure and the outside world. Most of your monitoring needs will center around the infrastructure you are responsible for, but it can be quite useful to monitor things outside of your infrastructure to help add information to your overall collection. What to monitorįirst, you need something to observe. If you take a 10,000-foot view of what it means to monitor infrastructure, you can see a few major components that come together to make a functional system. I'll cover some of the most popular choices in monitoring solutions and why you might be interested in one over another. When you start looking at options for building this kind of visibility into your environments, the options can be overwhelming. It can also provide valuable insight into historical patterns or trends that can influence planning for future upgrades or changes to the architecture. ![]() The ability to see the overall health of a system or a whole fleet can mean the difference between constantly reacting to problems and proactively preparing for issues before they get out of hand.
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